Clever cats Makayma Software have developed an app which allows you to have a much fuller set of features on your iPhone's camera. Meant as a replacement app to the iPhone camera, this app runs $19.95 (you can use it free, but you don't get all the features), and includes the following features:

Free Features:

Digital Zoom

Black and White

Image Size

Auto-orientation

"Premium" Features (stuff you get if you pay the $19.99):

Self Timer

Burst Mode

Silent Shutter (for when you want her to think you're just sending a text )

"Premium" Features Coming Soon (price will go up to $29.99 then, supposedly):

Manual Exposure

Shutter Speed

Scene Mode

All in all, a very cool app, stuff Apple should have included from the beginning.